430 randomly selected light bulbs were tested in a laboratory, 224 lasted more than 500 hours. find a point estimate of the proportion of all light bulbs that last more than 500 hours

Which of the binomials below is a factor of this trinominal? x^2-13+30

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?